3. Start engine and run at full throttle for at least two minutes. Monitor clear vinyl hose for signs of air or vapor bubbles and note reading on vacuum gauge.

4. The vacuum gauge reading must not exceed 4 in. of mercury (Hg) at any time. There should be no air or vapor bubbles visible in the clear hose.

If reading is 1 to 4 in. Hg and no bubbles are present, go to Step 8.

If reading is 1 to 4 in. Hg and bubbles are present, go to Step 7.

If reading exceeds 4 in. Hg, go to Step 5.

5. If your reading exceeds 4 in. Hg, you must test each boat fuel system component for excessive restriction before continuing. Refer to Boat Fuel System Recommendations, this section, for component descriptions.

Fill clear hose with water until “X” dimension is 20 in. (500 mm). Water must not run through valve.

Increase water level until “X” dimension is 25 in. (630 mm). Water must begin to run through valve before reaching 25 in. (630 mm).

Replace the anti-siphon valve if your test results vary.

7. If your reading is less than 4 in. Hg and air bubbles are visible in the clear hose, check entire boat fuel system for air leaks. Remember, an air leak into a fuel supply system might not create a visible fuel leak.

8. If your reading is less than 4 in. Hg and no bubbles are visible, move the clear hose to the output side of the in-line fuel filter.

Start engine and run it at full throttle. If bubbles appear, test in-line fuel filter. 0 If no bubbles appear, go to Step 9.

9. If no bubbles appeared in Step 8, remove the clear hose and install a 0-15 PSI (0-103 kPa) fuel pressure gauge between V305 pump and carburetors.

10. Start engine and run it at 800 RPM, in gear. After fuel pressure stabilizes, the pressure gauge must not indicate less than 3 PSI (21 kPa) when held level with VHO hose fitting.

If pressure is less than 3 PSI (21 kPa), test pulse limiter and crankcase fitting. Refer to V30 Component Servicing, this section.

If pulse limiter and crankcase fitting are good and pressure is less than 3 PSI (21 kPa), replace VRO pump.

SHIPPING RATES USPS/UPS FOR THE CONTINENTAL US

ALASKA, HAWAII, PUERTO RICO, CANADA AND OTHER US TERRITORIES REACH FOR A QUOTE

ALL OTHER LOCATIONS ACCORDING TO DESTINATION

FREE TECHNICAL ADVICE ON REQUEST

CALL IF YOU HAVE QUESTIONS REGARDING COMPATIBILITY

CERTIFIED BRP DEALER AND WARRANTY REPAIR SERVICE STATION SINCE 1979.

Lindenhurst Outboard Service Inc. -

The Outboard
Wizard305 E. Montauk Hwy

Lindenhurst NY 11757

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